#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>

int main()
{
	char * fn = "1.txt";
	int fd = Open(fn , O_RDONLY);
	Read(fd, buf, n);
	close(fd);
}
